Ford Custom 300 ECM-Power Relay Replacement at your home or office.

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ECM-Power Relay Replacement Service

How much does a ECM-Power Relay Replacement cost?

On average, the cost for a Ford Custom 300 ECM-Power Relay Replacement is $114 with $19 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1960 Ford Custom 300V8-4.8LService typeECM-Power Relay ReplacementEstimate$153.35Shop/Dealer Price$172.94 - $209.21
1960 Ford Custom 300V8-5.8LService typeECM-Power Relay ReplacementEstimate$133.35Shop/Dealer Price$152.96 - $189.24
1960 Ford Custom 300L6-3.6LService typeECM-Power Relay ReplacementEstimate$133.35Shop/Dealer Price$152.96 - $189.24
Show example Ford Custom 300 ECM-Power Relay Replacement prices

What is the ECM-Power Relay all about?

Vehicle development has evolved over the past several decades to a point where it seems every vehicle function is controlled by a computer, right down to the engine itself. This is actually the case for the engine and its related functions as it is controlled by the engine control module, or ECM. The ECM monitors and adjusts operation and power distribution to the fuel supply and injection systems, engine timing, exhaust gas recirculation, emissions, ignition system, and several other systems. In order to dispense power to operate these other systems, the engine control module requires power itself.

The power distribution center, or fuse block, located under the hood houses most or all of the vehicle’s fuses and relays. It contains a relay for the ECM that is powered up when the ignition key is turned to the on position. This ECM power relay acts as a switch that supplies power to the ECM. When the ignition is turned off, power switches inside the ECM relay and it no longer receives battery power. If the ECM power relay stops switching as it should, you will experience vehicle problems. When the relay is stuck open, no power will be delivered to the engine control module and the vehicle won’t start. If the relay is stuck closed, constant power will be sent to the ECM even with the engine turned off and the battery will drain.

Keep in mind:

  • The battery should be disconnected any time the electrical system is being serviced.
  • There are several problems which can cause your vehicle not to start, with the ECM power relay being one of them. Have the problem diagnosed by one of our expert technicians.

How it's done:

  • The ECM-power relay is verified that it needs to be replaced. The relay is located in the engine main fuse relay control box.

  • The defective ECM-power relay is removed from the control box by pulling it straight up and out of socket.

  • The new ECM-power relay is installed into the socket and the engine scanned for codes.

  • The engine is started and the ECM-power relay is tested for proper operation.

  • The vehicle is road tested for proper operation of the ECM-power relay and is then checked for codes.

Our recommendation:

The ECM power relay should last the lifetime of your vehicle unless there is a power distribution problem or moisture that causes it to fail. If your vehicle won’t start, have one of our expert technicians diagnose the problem and replace the ECM power relay if necessary.

What common symptoms indicate you may need to replace the ECM-Power Relay?

  • Engine will not start when the key is turned.
  • Engine doesn’t turn over when ignition is on.
  • Check Engine light is on.
  • Battery drain which may leave it weak or dead.

How important is this service?

Although it is extremely unlikely the ECM relay will cause your vehicle to stall or create a safety concern, your vehicle may not start or the battery may die while the ignition is off. In either case, you will need to replace the ECM relay.

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Meet some of our expert Ford mechanics

Real customer reviews from Ford owners like you.

Excellent Rating

(4)

Rating Summary
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Patrick

33 years of experience
1419 reviews
Patrick
33 years of experience
Ford F-150 V8-5.4L - ECM-Power Relay - Dripping Springs, Texas
Patrick has always been on time and is a great communicator. He researched the issue with my truck and found a faster/cheaper solution to the problem.

Charles

34 years of experience
342 reviews
Charles
34 years of experience
Ford Explorer V6-4.0L - ECM-Power Relay - Georgetown, Texas
Charles worked quickly and was very professional. He diagnosed my problem within minutes and was able to come back and fix it the next day. I am very happy with him.

Peter

43 years of experience
1321 reviews
Peter
43 years of experience
Ford Expedition V8-5.4L - ECM-Power Relay - Waddell, Arizona
Excellent service as always!

Richard

21 years of experience
461 reviews
Richard
21 years of experience
Ford Explorer V6-4.0L - ECM-Power Relay - Austell, Georgia
Phenomenal! He was very polite and courteous not to mention he really knew what he was doing! He explained everything to me in a way I could understand. So glad I called! I'll be referring Richard to all my friends and family. Should I ever run into car trouble again, I'm hunting Richard down! Lol... Keep up the good work and have a blessed day!

Excellent Rating

(4)

Rating Summary
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Number of Ford ECM-Power Relay Replacement services completed
44+
services done by our mechanics
TOTAL NUMBER OF EXPERT Ford MECHANICS
1700+
experts on our platform

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